//C11:ep11_1.c: initial struct.
#include<stdio.h>

int main() {
    
    struct student_st
    {
        long int num;
        char name[20];
        char sex;
        char addr[20];
    }arr = {10101,"Li Lin",'M',"123 Beijing Road"};
    printf("No.:%ld\nname:%s\nsex:%c\naddress:%s\n",arr.num,arr.name,arr.sex,arr.addr);
    printf("\nhello\n");
}